Recently we had proposed two untraceability protocols for mobile agents and began investigating their quality. We believe that quality evaluation of security protocols should extend a sole validation of their security and cover other quality aspects, primarily their efficiency. Thus after conducting a security analysis, we wanted to complement it with a performance analysis. For this purpose we developed a performance evaluation framework, which, as we realised, with certain adjustments, can be

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... applied to evaluate performance of a whole class of security protocols for mobile agents. This class contains the protocols in which each host on the agent's route is responsible for providing a security function, and, inter alia, includes a big variety of integrity checking schemas and accountability mechanisms for mobile agents such as Lee's Partial Results Authentication Codes or family of Karjoth's et al protocols for protection of computation results of free-roaming agents. Finally, we used the framework to evaluate efficiency of our Untraceability Protocol I. In this paper we present the framework and the results of the evaluation.